| dark(adjective, lack, grim, hopeless) | |
| dull(adjective, dim, drab, cloudy, lackluster) | |
| gloomy(adjective, dark, black) | |
| pale(adjective, clear, light, dark, effect) | |
| dreary(adjective, gloomy, lifeless) | |
| cloudy(adjective, good, clear) | |
| depressing | |
| black | |
| dim(adjective, dull, intelligent, cloudy, darkish) | |
| dismal(adjective, clear, light, gloomy, bleak) | |
| murky(adjective, good, clear, obscure, gloomy) | |
| somber(adjective, light) | |
| soul-crushing | |
| very upset | |
| dusky(adjective, murky) | |
| fatuous(adjective, stupid) | |
| dimmed(verb, adjective) | |
| gray | |
| grim(adjective, good, appearance, manner, hopeless) | |
| obscure(adjective, cloudy, shadowy) |
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| APA | Smart Define. (2016). bright thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/bright/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "bright thesaurus" https://smartdefine.org/bright/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, bright thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/bright/thesaurus/antonyms>. |
| MLA | Smart Define. "bright thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/bright/thesaurus/antonyms> |